What Makes DOM Steel Tubing Unique in Its Manufacturing Process and Applications?

DOM (Drawn Over Mandrel) steel tubing stands out in the metals industry due to its unique manufacturing process and wide range of applications. This tubing, which is known for its high strength and uniformity, plays a critical role in various sectors.

Manufacturing Process of DOM Steel Tubing

Seamless Tubing Formation

Manufacturers start with a solid steel rod known as a billet. They heat this billet and pierce it to create a hollow tube, forming the basis of seamless tubing. This step ensures no seams or welds, attributing to the tubing's exceptional strength.

Drawing Over a Mandrel

The core process involves drawing the tube over a mandrel – a precision tool that shapes and sizes the tubing. This step refines the dimensions and improves surface finish, ensuring uniformity and consistency in the product.

Heat Treatment and Finishing

Post-drawing, the tubing undergoes heat treatment for stress relief and strength enhancement. Finishing processes like cutting to length, straightening, and surface treatment further refine the tubing for its specific applications.

Unique Applications of DOM Steel Tubing

Automotive Industry

In the automotive sector, DOM steel tubing is essential for roll cages, chassis, and suspension components. Its high strength-to-weight ratio contributes to vehicle safety without adding unnecessary weight.

Construction and Infrastructure

DOM tubing's uniform strength and durability make it a popular choice in construction, particularly for structural supports and architectural features.

Precision Instruments

Due to its dimensional accuracy, DOM tubing is ideal for precision instruments, especially in the aerospace and defense industries, where exact specifications are crucial.

Key Advantages and Specifications

Strength and Durability

DOM steel tubing provides superior tensile strength, typically ranging between 70,000 to 100,000 psi. Its durability and resistance to deformation under stress are unparalleled.

Dimensional Accuracy

With an outside diameter tolerance of ±0.005 inches and a wall thickness tolerance of ±10%, DOM tubing offers unmatched precision.

Cost and Efficiency

While the initial cost of DOM steel tubing might be higher compared to other types, its longevity and low maintenance requirements make it a cost-effective solution in the long run. Its manufacturing efficiency also reduces waste, contributing to economic and environmental benefits.


DOM steel tubing is available in various sizes and specifications, catering to a wide range of needs. Standard sizes range from 0.5 inches to 12 inches in diameter, with custom sizes available upon request.

Lifespan and Quality

The lifespan of DOM steel tubing typically exceeds that of welded tubing due to its enhanced strength and corrosion resistance. Its consistent quality ensures reliability in demanding applications.


DOM Steel Tubing is a versatile and robust material with unique manufacturing processes that contribute to its superior strength, precision, and durability. Its applications span across various industries, making it an invaluable component in modern engineering and manufacturing.

For more detailed information about DOM steel tubing, you can visit Lord Tubing.

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